Self-drilling screw with improved drill tip



FIG. 1 is a front perspective view of a self-drilling screw with improved drill tip incorporating our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top perspective view thereof;

FIG. 4 is a top plan view with a section line cut-through a drill tip thereof and illustrated in FIG. 12;

FIG. 5 is a top plan view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a rear elevation view thereof;

FIG. 8 is a right end view thereof;

FIG. 9 is a left end view thereof;

FIG. 10 is an enlarged front elevation view of a drill tip thereof;

FIG. 11 is an enlarged top plan view of a drill tip thereof; and,

FIG. 12 is an enlarged section view thereof, cut through line 12-12 of FIG. 4.

The broken lines rendered in the drawings illustrates the environment of the claimed design and forms no part thereof. 

CLAIM The ornamental design for a self-drilling screw with improved drill tip, as shown and described. 